Code guides
The code, in plain English. Edition-by-edition.
Construction estimators don't need another full code book — they need the answer for the specific edition, the specific occupancy, and the specific scope they're bidding. These guides give that.
Reference
Pick a code, get the answer.
The OmniTakeoff pipeline applies the right edition per project automatically; these guides are for when you want to verify the math by hand.
NEC 210.8
GFCI requirements (NEC editions 2014–2026)
Where ground-fault circuit-interrupters are required, by occupancy and edition. The system applies the right edition automatically per project.
NEC 210.12
AFCI requirements
Arc-fault protection requirements per NEC edition; combination-type vs branch / feeder type and where each is allowed.
NEC 406.12
Tamper-resistant receptacles
Where TR receptacles are required — most habitable spaces, daycare, schools, healthcare. Edition-by-edition coverage.
IBC Chapter 7
Fire-resistance ratings
Required fire ratings for assemblies (walls, floors, doors) by occupancy and construction type. UL/Warnock-Hersey assemblies indexed.
IBC Chapter 3
Occupancy classifications
Occupancy groups (A / B / E / F / H / I / M / R / S) and their primary code implications for fire, egress, and structural.
ASCE 7
Roof wind zones (field / perimeter / corner)
How ASCE 7 zones flow through to roof takeoff: field square footage, perimeter LF, corner SF, and the fastener-pattern adders that follow.
OSHA 1926.501
Fall protection trigger heights
When fall-arrest, guardrails, and safety nets are required by trade. Drives JHA + safety scope on the takeoff.
ADA / ANSI A117.1
ADA accessibility
Reach ranges, clear floor space, and signage requirements. Drives door hardware, plumbing-fixture mounting, and signage takeoff.
Davis-Bacon / state prevailing wage
Prevailing wage primer
When a project triggers prevailing wage and how the system applies the wage delta as a separate line on the bid.
Disclosure
These are summaries, not the code.
The references on this page are plain-English summaries for estimating purposes. They are not a substitute for the actual code documents — NEC, IBC, OSHA, ASCE, ADA — which you should review for AHJ-specific amendments. Adopted editions vary by jurisdiction; OmniTakeoff applies the edition declared on the project, not a hard-coded default.
When the AHJ-adopted edition differs from the spec, we surface that as a validation flag during the pipeline's validation step, not silently apply one over the other.